19913584

素因数分解:

$2^4\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{1021}}^1$

素因数の和:1105

約数の個数: 40

約数和(自身を含む): 41059872

約数和(自身を除く): 21146288

約数列:

[1, 2, 4, 8, 16, 23, 46, 53, 92, 106, 184, 212, 368, 424, 848, 1021, 1219, 2042, 2438, 4084, 4876, 8168, 9752, 16336, 19504, 23483, 46966, 54113, 93932, 108226, 187864, 216452, 375728, 432904, 865808, 1244599, 2489198, 4978396, 9956792, 19913584]

約数ペア:

[(1, 19913584), (2, 9956792), (4, 4978396), (8, 2489198), (16, 1244599), (23, 865808), (46, 432904), (53, 375728), (92, 216452), (106, 187864), (184, 108226), (212, 93932), (368, 54113), (424, 46966), (848, 23483), (1021, 19504), (1219, 16336), (2042, 9752), (2438, 8168), (4084, 4876)]